Mounting means for a door lock



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United lStates Patent O MOUNTING MEANS Fon A noon LocK Nicholas A. Welch, West Hartford, Conn., assignor to The American Hardware Corporation, New Britain, Conn., a corporation of Connecticut 1 Claim. (Cl. 70-451) This application is a division of my copending application Serial No. 643,568, tiled March 4, 1957, and relates particularly to means for mounting a ,door lock in a tubular or hollow door frame.

The door lock disclosed herein is particularly intended for use in the extruded aluminum frame of a glass door and includes a lock mechanism such as fully disclosed in said copending application. However, it will be readily understood that the mounting means forming the subject of this application is not limited to use in the specific lock or door frame shown, but can be easily adapted to other locks of the mortise type which are intended to be used in other types of door frames or doors.

The primary object of the present invention is to provide a lock which can be quickly and easily installed in a door frame constructed of extruded tubular sections.

Another object of the present invention is to provide a door lock which can be mounted in a tubular door frame without drilling or tapping said frame.

A still further object of the invention is to provide mounting means for a door lock which can be incorporated directly into the lock, thereby eliminating the need of separate fastening screws and the like.

Another object of my invention is to provide mounting means for a door lock by which the lock is supported in the frame independently of the cylinder locks, or other operating means, extending from the inner and outer sides of the lock casing through the frame, thereby making it possible to install and remove the cylinder locks without disturbing the door lock itself.

Further objects and advantages of the present invention will be more clearly understood from the following description and from the accompanying drawings in which:

Fig. 1 is a sectional plan view, on line 1--1 of Fig. 3, showing my improved lock installed in a tubular section of a frame for glass doors.

Fig. 2 is an edge view of the frame and lock of Fig. l.

Fig. 3 is an elevational view, partially in vertical section, further illustrating my improved mounting means.

In the embodiment illustrated in the drawing, the numeral 5 denotes a section of a tubular frame, for a glass door or the like, which is preferably formed of extruded metal such as aluminum. The front Wall 5-a of the frame, which defines the edge of the door, is provided with a rectangular opening 6 and the opposite side walls S-b--S-b thereof are provided with coaxial holes 7 7 which receive the parts of my improved lock in the manner to be hereinafter described.

The said lock includes a casing 8 which contains a lock mechanism, such as that shown in said copending application, for operating a latch bolt 9. Said mechanism may be controlled from the outer side of the door by means of the key operated plug 10 of a conventional cylinder lock 11, and from the inner side of the door by an operating handle 12 which is arranged to rotate ice in a cylinder member 13 similar to the cylinder 11; the said cylinders 11 and 13 being threaded into suitable openings in the opposite sidewalls of the casing 8 and extending through the openings 7-7 in the frame.

For the purpose of mounting the said lock within the tubular frame 5, the said casing 8 is provided at its opposite ends with lextensions 14-14 which project beyond the opposite edges ofthe opening 6, as clearly shown in Fig. 2, so that they overlap the inner surface of the front wall 5-a adjacent to the edges of said opening; the width of the casing 8 being less than the width of the opening 6 so that the lock may be inserted into the frame through said opening.

In order to secure the said lock in mounted position within the frame 5, as clearly shown in Fig. 3, the casing is provided with a pair of threaded holes 15-15 which extend longitudinally through said extensions inwardly of the edges of the opening 6 and receive mounting screws 16-16 that are threaded into said holes and are adapted to project from the rear edge of the casing as clearly shown in Fig. 3; said screws being substantially shorter than said holes. On the front edge of the casing, there is provided a faceplate 17 which lits snugly within the opening 6 and ilush with the outer surface of the frame 5. This plate is secured to the lock by means of securing screws 18-18 which are also threaded into the holes 15-15.

My improved lock is mounted in a tubular frame as shown in the drawings in the following manner:

The lock casing is first inserted endwise and at an angle into the opening 6 and moved lengthwise within the frame until its opposite end clears the adjacent end of said opening. The entire casing is then moved inwardly so that it is contained within the frame and properly located with respect to the opening to receive the faceplate 17. The screws 16--16 are then turned with a suitable tool, such as a socket wrench or a screw driver which is inserted through the holes 15--15, until the said screws abut the rear wall 'S-c of the frame and force the extensions 14-14 against the inner surface of the wall S-a of said frame. When the lock is thus firmly secured in position within the frame, the faceplate 17 is placed Within the opening 6 and secured to the lock casing by means of the screws 18-18. The cylinders 11 and 13 are then inserted through their respective openings 7--7 and threaded to the casing 8 until they are tight against the opposite sides of the frame and the lock is then completely mounted in operative position.

It will be noted that when in the mounted position, the lock is held from shifting endwise by means of the faceplate 17 and it is secured against lateral movement by the cylinders 11 and 13 which are in engagement with the outer surfaces of the said section.

iIf desired, the inner corners of the extensions \1414 may be bevelled as at 19-19 in order to facilitate the insertion of the lock through the opening 6 when the said frame is of such a size that the corners of the casing would engage the rear wall of the frame and interfere with the passage of the lock through the opening 6. l

l claim:

A lock for installation in a hollow door frame having a front wall defining the edge of the door and containing an opening therethrough, a rear wall spaced from said front wall, and side walls joining said front and rear walls and having holes therein; said lock including a casing having extensions at its opposite ends and being of greater length than said opening, said casing being adapted for insertion into said frame through said opening and positionable with said extensions overlapping the inner surface of said front wall adjacent the opposite edges of said opening, a. pair of mounting screws threaded through holes extending rearwardly through the opposite ends of said casing and located inwardly of the edges of said opening, said screws extending rearwardly fromsaid cas-f ing and being engageable with said rear Wall for. pressing said extensions against said front wall to thereby secure the lock casing in said frame, and a pair of lock operating members adapted for assembly to said lock casing by insertion through said holes in the. side walls of said frame, said lock operating members beingv detachable from said casing without disturbing the position of ysaid casing in the frame by reason of the fact thatsaid casing is secured in `said frame by said mounting screws and said extensions.

References Cited in the file of this patent UNITED STATES PATENTS Scism May 4, 1909 Lindelof Apr. 24, 1923 Golden et al May 25, 1943 Carlson June 14, 1949 Elstad June 5, 1951 Katz July 7, 1953 Martin Jan. 17, 1956 Schlage Mar. 19, 1957 Irnhoft` Jan. 20, 1959 FOREIGN PATENTS Great Britain Dec. 28, 1933 

